84 lines
2.7 KiB
Python
84 lines
2.7 KiB
Python
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# Copyright 2016 Google Inc. All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""Testing support code."""
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# internal imports
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import numpy as np
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from google.protobuf import text_format
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def assert_set_equality(test_case, expected, actual):
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"""Asserts that two lists are equal without order.
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Given two lists, treat them as sets and test equality. This function only
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requires an __eq__ method to be defined on the objects, and not __hash__
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which set comparison requires. This function removes the burden of defining
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a __hash__ method just for testing.
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This function calls into tf.test.TestCase.assert* methods and behaves
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like a test assert. The function returns if `expected` and `actual`
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contain the same objects regardless of ordering.
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Note, this is an O(n^2) operation and is not suitable for large lists.
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Args:
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test_case: A tf.test.TestCase instance from a test.
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expected: A list of objects.
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actual: A list of objects.
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"""
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actual_found = np.zeros(len(actual), dtype=bool)
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for expected_obj in expected:
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found = False
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for i, actual_obj in enumerate(actual):
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if expected_obj == actual_obj:
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actual_found[i] = True
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found = True
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break
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if not found:
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test_case.fail('Expected %s not found in actual collection' %
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expected_obj)
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if not np.all(actual_found):
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test_case.fail('Actual objects %s not found in expected collection' %
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np.array(actual)[np.invert(actual_found)])
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def parse_test_proto(proto_type, proto_string):
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instance = proto_type()
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text_format.Merge(proto_string, instance)
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return instance
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class MockStringProto(object):
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"""Provides common methods for a protocol buffer object.
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Wraps a single string value. This makes testing equality easy.
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"""
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def __init__(self, string=''):
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self.string = string
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@staticmethod
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def FromString(string): # pylint: disable=invalid-name
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return MockStringProto(string)
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def SerializeToString(self): # pylint: disable=invalid-name
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return 'serialized:' + self.string
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def __eq__(self, other):
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return isinstance(other, MockStringProto) and self.string == other.string
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def __hash__(self):
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return hash(self.string)
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